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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Unzip;
/**
* Unzip implementation for .gz files.
*
*/
class Gzip implements UncompressInterface
{
/**
* Name of .gz file.
*
* @var string
*/
private $filename = null;
/**
* Error string.
*
* @var string
*/
private $error = null;
/**
* Constructor.
*
* @param string $filename Name of .gz file.
*/
public function __construct($filename)
{
$this->filename = $filename;
}
/**
* Extracts the contents of the .gz file to $pathExtracted.
*
* @param string $pathExtracted Must be file, not directory.
* @return bool true if successful, false if otherwise.
*/
public function extract($pathExtracted)
{
$file = gzopen($this->filename, 'r');
if ($file === false) {
$this->error = "gzopen failed";
return false;
}
$output = fopen($pathExtracted, 'w');
while (!feof($file)) {
fwrite($output, fread($file, 1024 * 1024));
}
fclose($output);
$success = gzclose($file);
if ($success === false) {
$this->error = "gzclose failed";
return false;
}
return true;
}
/**
* Get error status string for the latest error.
*
* @return string
*/
public function errorInfo()
{
return $this->error;
}
}
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